Machine for fabricating radiator cores



July 2, 1935- M. G. BOER'GER MACHINE FOR FABRICATING RADIATOR CORESFiled Nov. 22, 1952 4 Sheets-Sheet 1 llllllllllllllfllllllllull I M47151Z72,

y 1935- 7 YM. G. BOERGER I 3 MACHINE FOR FABRICATING RADIATOR CORESFiled Nov. 22, 1952 4 Sheets-Sheet 5 r a: v z/ fizz/aria?" Mai 1'72Gifioczyer y July 2, 1935. M. G. BOERGER 21,006,383

MACHINE FOR FABRICATING RADIATOR CORES I Filed Nov. 22, 1932 4Sheets-Sheet 4 r frwenfon (flu ffczrizfrz Gfior yer Max/ Patented July2, 1935 UNITED STATES.

2,006,383 MACHINE FOB FABRIGATING RADIATOR .CORES Martin 'G.- Boenger,

Racine, Wis., assignor to Modine Manufacturing Company, Racine, Wis.,

a corporation of Wisconsin Application November 22, 1932, Serial No.643,885

'3 Claims.

The invention relates to a machine for fabrieating a radiator core, thecore being comprised of fins and tubes and the combination thereof withmeans for producing the fins and presenting them to a means forassociating said fins and tubes.

, it is an object of the invention to produce a machine foraccomplishing theabove mentioned advantage capable of successivelyfeeding fins to tubes and spacing said fins a prescribed distance fromeach other upon the tubes and to associate with a mechanism such as thismeans capable of forming the fins, this last mentioned means beingarranged relatively to the first mentioned means so that the completedfin will be presented to the means for applying the fins to the tubes. I

Another object of the invention is to construct a machine such as thatabove referred to in which fin stock of strip form may be presented tomeans for fashioning the fin.

Another object of the invention is to provide an operating upon finstock to fashion the fin, the stock being automatically fed to theforming device which, afterthis last mentioned operation is completed,will deliver the completed fins to means for presenting them to thetubes to fabricate the core.

The invention has these and other objects, all of which \will beexplained in detail and more readily understood when read in conjunctionwith the accompanying drawings which illustrate one embodiment of whichthe invention is susceptible, it being manifest that changes andmodifications may be resorted to without departing from the spirit ofthe appended claims forming a part hereof.

In the drawings, Fig. 1 is a side elevation of a machine constructed toaccomplish the above enumerated advantages;

Fig. 2 is a plan view of one end of ture shown in Fig. 1;

Fig. 3 is a section taken on line 3-3 of Fig. 2;

Fig. 4 is a section taken on line 4-4 of Fig. 3;

Fig. 5 is a section taken on line 5-5 of Fig. 2;

Fig. 6 is a section taken on line 6-6 of Fig. 5;

Fig. 7 is an enlarged sectional detail taken substantially on line 'IIof Fig. 8; and

Fig. 8 is an enlarged sectional detail of the die and associated partsshown in Fig. 3.

The structure illustrated contemplates the utilization of a main frameHI providing a support for the various elements entering into theconstruction. This frame supports an endless the. strucautomaticallyoperable machine capable of' element H which is carried by sprockets I2and I3 mounted upon shafts respectively designated I4 and I5. Thisendless element ii is provided with a pluralityof elements it which aredesigned to engage the formed fins and present 5 them to a rack oftubesgenerally designated ii to arrange said fins in spaced relation toeach other thereon, these parts are so constructed and arranged that thetubes are supported by the elements i6 during the period in which thefins are presentedto said tubes, and that they are movable in adirection longitudinally of said tubes a prescnbed distance for each finpresented to said rack of tubes. A head i8 providing an abutment forsaid rack is provided which is mov-,. able a prescribed distance bymeans of the worm shaft IS in the direction of movement of the workingside of the endless element M.

A machine constructed in this manner is shown and described in myapplication, Serial No. 643,884, filed November 22, 1932. The structureshown in the application just referred to contemplates the utilizationof a hopper into which the formed fins are deposited and from which theyare dispensed and presented to the elements l6 which, as before stated,present the fins to the rack of tubes generally designated H.

The present invention contemplates the provision of a device capable .ofaccepting stock from which the fin is to be produced, fashioning the finand automatically presenting the same to the elements IG-of the conveyorII and to operate a device such as that just referred to through a.connection preferably made with one of the shafts such as M. The devicefor fashioning and presenting the finished fin to the conveyor iicontemplates means for presenting a strip of material to meansforfashioning and. severing a. portion of the stripfrom the remainder tothus produce the desired fin and then presenting the severed piece toelementssuch as I6 of the conveyor. To accomplish this advantage, a rollof fin stock generally designated 19 is mounted upon a spindle 20 and aportion thereof such as. 2| is intermittently advanced to a fashioningand severing mechanism generally designated 22 which fashions the stock,severs it and causes the finished-article to be presented to the ele-?ments iii of the conveyor. The roll of fin stock is supported throughthe agency of a bracket 23 which is fastened to the main frame In. Thisfin stock is intermittently presented to the device generally designated22 through the agency of ffeed rolls 24 and 25 between which the finstock extends and which are intermittently operated 55 28 supported inbearings 25. This shaft 24 is provided with another. bevel gear II whichin turii meshes with a bevel gear 3|. This bevel gear ii is connectedwith a shaft 52 having a bevel gear 33, the latter meshing with a bevelgear 54 provided upon the crank shaft 35 which extends across an end ofthe machine and issupported uponsuitable brackets 55 upon the frame II.

The crank shaft 35 is provided with a crank disc 31 having one end ofaconnecting rod 54 secured thereto, the opposite end of the connectingrod 38 being connected with a rack 55 which meshes with a gear 4|secured to a shaft 4|. A ball or other clutch 42 is interposed betweenthe gear 45 and the shaft 4|. This clutch is of a character which willimpart rotative motion to the shaft 4| when the gear thereof is rotatedin one direction, but will not impart any motion to said shaft when thegear is rotated in the opposite direction.

The feed roll 24 is connected with the shaft 4| and it is thereforeevident that rotative motion is imparted to the feed rolls 24 and 25when the rack 39 is moved in one direction, but will not be actuatedwhen said rack is moved in the opposite direction which will thus impartintermittent motion to the rolls 24 and 25 and thus intermittently feeda predetermined portion of the V strip of mi stock 2| to the fashioningand severing mechanism generally designated 22.

The crank shaft 35 has links 43 and 44 connected therewith. One end ofeach link is connected to a movable ram 45 which is slidably mountedupon ways 45" attached to the main frame It. The ram 45 is provided withany desired form or number of piercing punches 45" rigidly at-'tachedthereto each adapted to cooperate with corresponding parts upon afin die 45 to produce the desired openings in the fins to receive thetubes II.

The face of the die 45 may be grooved or otherwise formed if desired, sothat indentations, corrugations or other forming may be produced in orupon the fin by the closing of the ram 45 toward the die 45. A blade 45"is also rigidly attached to the ram 45 arranged to cooperate with ablade 46'', or part upon the die 45 to'sever the formed and piercedfinfromthe strip 2 Astripper 45' is also mounted upon the ram 45 withsuitable springs 46'" or other convenient means for yieldinglv holdingthe face of the stripper beyond the outer end of the piercing punches45" so that as the ram 45 is retracted the stripper will remove thefinshed fin from the punches and permit the same to fall from betweenthe punches and the die. The face of the stripper is preferably formedto correspond with any grooves, indentations or projections upon theface of the die 45, so that when the ram reaches its point of nearestapproach to the die 46, the

stripper will be thereby forced against the die 46, they are receivedupon an apron 48 which preferably extends from a point below andslightly in front of the die 45 and curves downward and toward theadjacent end of the conveyor ll. so that the finished fins released fromthe punches and the die 45 slide downward to the lower edge thereof.This apron is provided with transverse slots 49 which permit theelements It upon the conveyor to pass through'the outer margin, of theapron and receive and remove any fin resting thereon. The conveyor llmay be operating in any desired manner, as for instance, through theagency of a motor 50 connected in the usual or'any desired manner withthe shaft II to rotate the same.

From the foregoing description it is believed obvious that when theshaft I 4 is rotated, the shaft 28 will be rotated also, which in turnwill actuate the crank shaft 55 reciprocating the movable ram, and inaddition will cause motion to be imparted to the rack 89. The movementof this rack will operate the feed rollers 24 and 25 and advance aportion of the strip of stock into the space between the ram 45 with itspunches,

stripper and cutting blade and the fin die 48 which will fashion andsever the fin from the strip and permit the fin .to pass to theassembling mechanism and be presented to the element it of the conveyorwhich is also operated positively by the rotation of the shaft H asdescribed in my copending application to suecessively present the finsto the tubes and thus fabricate the radiator core.

It is obvious also ,that the combination of elements herein describedprovides a machine which facilitates the production of a radiator coreand greatly increases the speed and efl'ciency of producing the same,thus effecting a material reduction in the cost of such cores.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. In a machine for fabricating radiator cores, said cores comprisingtubes and fins mounted upon said tubes, means for successively formingthe fins and severing the same from a strip, and means for receiving andsupporting said fins as they are released from said forming means, incombination with an endless element mounted on rotatable means andprovided with means for supporting the tubes in position and for successively removing said fins from said receiving means. carrying the sameone by one to the ends ofsaid tubes and separately moving the same intoposition upon said tubes.

2. In a machine for fabricating radiator cores, said cores comprisingtubes and fins mounted upon said tubes, means the fins and severing thesame from a strip, and means for receiving and supporting said fins asthey are released from said forming means in combination with rotatablymovable means for supporting the tubes in position. said movable meansalso being arranged for successively removing said fins from saidreceiving means, carrying the same one by one to the ends of said tubesand separately moving the same into position upon said tubes.

3. In a machine for fabricating radiator cores, said cores comprisingtubes and fins mounted upon said tubes. means for successively formingfor successively formingthe fins and severing the same from a strip oneby one, mechanism for automatically feeding said strip to said formingmeans, and means for receiving and supporting said fins as they arereleased from said forming means in combination with annularly spacedrotatably movable means for supporting the tubes in position and forsuccessively removing said fins from said receiving means, carrying thesame one by one to the ends of said tubes and separately moving the sameinto position upon said tubes.

4. In a machine for fabricating radiator cores, said cores comprisingtubes and fins mounted upon said tubes, means for successively formingthe fins and severing the same from a strip one by one. mechanism forautomatically feeding said strip to said forming means and means forreceiving and supporting said fins as they are released from saidforming means in combination with an endless element mounted onrotataole means and provided with movable means for supporting saidtubes in position and for successively removing said fins from saidreceiving means, carrying the same one by one to the ends of said tubesand separately moving the same into position upon said tubes.

5. In a machine for fabricating radiator cores, said cores comprisingtubes and fins mounted upon said tubes, means for successively formingthe fins and severing the same from a strip one by one, and means forreceiving and supporting said fins as they are released from saidforming means in combination with an endless element mounted onrotatable means and provided with movable means for supporting the tubesin position. said movable means being also formed and arranged tosuccessively remove said fins from said receiving means, carry the sameone by one to the ends of said tubes and separately move the same intoposition upon said tubes.

6. In a machine for fabricating radiator cores, said cores comprisingtubes and fins mounted upon said tubes, means for successively formingthe fins and severing the same from a strip one by one, mechanism forautomatically feeding said strip to said forming means, and. means forreceiving and supporting said fins as they are reeased from said formingmeans in combination with an endless element mounted on rotatable meansand provided with means for supporting the tubes in position, saidsupporting means also being formed and arranged to successively re,-move said fins from said receiving means, carry the same one by one tothe ends of said tubes and, separately move the same into position uponsaid tubes.

7. In a machine for fabricating radiator cores, said cores comprisingtubes and fins mounted upon said tubes, forming mechanism comprisingmeans for successively forming the fins and severing the same from astrip one by one, and means for receiving and supporting said fins asthey are released from said forming means in combina tion withassembling mechanism comprising rotatable means for supporting the tubesin position, said rotatable means being also formed and arranged tosuccessively remove said fins from said receiving means, carry the sameone by one to the end of said tubes and separately move the same intoposition upon said tubes, a driving element and means positivelyconnecting said forming mechanism and said assembling mechanism to saiddriving element to operate the same synchronously.

MARTIN G. BOERGER.

